I took some artistic drawing class once. I had a lot of work drawing a pot on top of a piece of cloth. But then the second thing was a horse statue the teacher had. Again, it was on top of a cloth. Needless to say, I stopped going to the classes because the difficulty had spiked to levels my eye hand an eyes were not trained for.

Regardless, what I came to say is that it is a nice drawing. I can see from the process that you follow a sketch and refine it until you have a nice result. Also this looks like pen, which makes it even more interesting considering it is more difficult to erase. Nice job!